Sodium aluminates supported on hydrotalcite are highly advantageous basic heterogeneous catalysts with strong basicity and interesting texture. We demonstrate that even if the texture of the hydrotalcite is strongly affected by the incorporation of NaAlO2, a good dispersion of the latter can be obtained, which appears to have a great impact on the catalytic conversion of glycerol to glycidol. This method should also allow us to further fine tune the basic strength by controlling SA amount for better catalytic activity in various base catalyzed biomass conversion reactions.